sem_attr.ads, [...] (Analyze_Attribute, case Value): For enumeration type, mark all...

sem_attr.ads, [...] (Analyze_Attribute, case Value): For enumeration type, mark all literals as referenced.

2007-08-14  Robert Dewar  <dewar@adacore.com>
	    Ed Schonberg  <schonberg@adacore.com>

	* sem_attr.ads, sem_attr.adb (Analyze_Attribute, case Value): For
	enumeration type, mark all literals as referenced.
	(Eval_Attribute, case 'Image): If the argument is an enumeration
	literal and names are available, constant-fold but mark nevertheless as
	non-static.
	Clean up function names.
	(Name_Modifies_Prefix): Rename to Name_Implies_Lvalue_Prefix. Clarify
	comment.
	(Requires_Simple_Name_Prefix): Removed.

From-SVN: r127425